20522050222144 has 28 divisors (see below), whose sum is σ = 43118940083004. Its totient is φ = 9657435398144.

The previous prime is 20522050222033. The next prime is 20522050222159. The reversal of 20522050222144 is 44122205022502.

It can be written as a sum of positive squares in 2 ways, for example, as 15933509222400 + 4588540999744 = 3991680^2 + 2142088^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9431088169 + ... + 9431090344.

Almost surely, 2^{20522050222144} is an apocalyptic number.

It is an amenable number.

20522050222144 is an abundant number, since it is smaller than the sum of its proper divisors (22596889860860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20522050222144 is a wasteful number, since it uses less digits than its factorization.

20522050222144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18862178542 (or 18862178532 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 20522050222144 its reverse (44122205022502), we get a palindrome (64644255244646).

The spelling of 20522050222144 in words is "twenty trillion, five hundred twenty-two billion, fifty million, two hundred twenty-two thousand, one hundred forty-four".